Abstract
The characteristics of sensor networks have imposed various restrictions on their system designs. Similar to security concerns on data transmission over various networks, how to provide security-enhanced data delivery in sensor networks has become an important issue. In this paper, we propose a half-key scheme based on the well-known multi-key pre-distribution approach to provide data delivery in sensor networks with reduced memory space requirements and better security enforcement. The capability of the proposed approach is evaluated by an analytical model and a series of experiments
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